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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-01-10 21:16:42 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-02-21 01:10:27 +0100 |
| commit | bec06785fe2c866ccf39cafa18935d88d77d559a (patch) | |
| tree | 70b634575dc6b661a57d8da2abf2fec13eabee09 /kernel/rcu | |
| parent | rcu: Call touch_nmi_watchdog() while printing stall warnings (diff) | |
| download | linux-bec06785fe2c866ccf39cafa18935d88d77d559a.tar.xz linux-bec06785fe2c866ccf39cafa18935d88d77d559a.zip | |
rcu: Remove obsolete boost statistics for debugfs
The debugfs interface displayed statistics on RCU priority boosting,
but this interface has since been removed. This commit therefore
removes the no-longer-used rcu_data structure's ->n_tasks_boosted,
->n_exp_boosts, and ->n_exp_boosts and their updates.
If this information proves necessary in the future, the corresponding
event traces will be added.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.h | 6 | ||||
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 8 |
2 files changed, 2 insertions, 12 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 6488a3b0e729..01abd1c4e5da 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -146,12 +146,6 @@ struct rcu_node { /* boosting for this rcu_node structure. */ unsigned int boost_kthread_status; /* State of boost_kthread_task for tracing. */ - unsigned long n_tasks_boosted; - /* Total number of tasks boosted. */ - unsigned long n_exp_boosts; - /* Number of tasks boosted for expedited GP. */ - unsigned long n_normal_boosts; - /* Number of tasks boosted for normal GP. */ #ifdef CONFIG_RCU_NOCB_CPU struct swait_queue_head nocb_gp_wq[2]; /* Place for rcu_nocb_kthread() to wait GP. */ diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 7e31fb1e9fd8..0d552985b905 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -963,14 +963,10 @@ static int rcu_boost(struct rcu_node *rnp) * expedited grace period must boost all blocked tasks, including * those blocking the pre-existing normal grace period. */ - if (rnp->exp_tasks != NULL) { + if (rnp->exp_tasks != NULL) tb = rnp->exp_tasks; - rnp->n_exp_boosts++; - } else { + else tb = rnp->boost_tasks; - rnp->n_normal_boosts++; - } - rnp->n_tasks_boosted++; /* * We boost task t by manufacturing an rt_mutex that appears to |